interesting game! I haven't finished it yet but I think it is very polished. 
I really like the music, fit the vibe very well.
The turn based tactic combined with a little action mini game performed very well, but I think, maybe adding more elements that are different to the game since the wave theme? say how the wave would affect the terrain or the gameplay? or there are some random things happen when you attack? I expected to see something more special in the game..(I just get the fourth teammate) If there are some new things like that in later levels, I'd suggest move it early. I feel it is a little slow after playing the first levels(well, might be I'm not that patient these days, with all the games that has faster paces, my bad :P)

And thanks for finish my game. I'm a little concern about the UI problem you mentioned - can you make a screen shot of that when you get time? thanks!

As for your game, I haven't met any noticeable bugs yet! well done!

This is a lovely game, I normally not a big fan of narrative games in jam but this is a good one. 

I like saja and I think he is handsome lol. I feel his shock expression kind of remind me of ace attorney, and I like it. I like how the story and the detective part in the game. It's not as heavy as return of the obra dinn for sure but has it's own difficulty and fun.

Some suggestions I think.. 

I can understand this is a story happen in korea so all the name are korean names, but I think it is a little hard for foreigner to remember the names during the game, especially remembering name is an important part in the game lol. I do appretiate for the culture explain of the name convention in Korea.

I think number of names  match character is not enough, so it's quite easy to crack the game by try all the combinations lol. I know it is not a correct way to play the game, but when it is easier that way, player might choose to do that and lose the important detective part of the game.

Another part I don't really enjoyed, is the wave mini game. first, the game itself is not challenging or fun, especially after play it for several times. second, I can not know which wave is who until I get to that wave and listen, so if I know A's name, I might need to try to get all waves and find out who is A, then match it, which is kind of annoying because, as I said, the wave mini game itself is not that fun. 

These are just some of my inputs, overall this is a really great story and game, good job and I'd love to play more of it!